"Also many people who buy these games aren't serious gamers with up to date PCs."
I realy have to beg to differ about this line.
There are more crap games being produced now then games that ran on them none up to date machines.
Building a game on a machine platform with limitations forces the developer to consintrate on the elements that will make the game FUN to play and keep the players focus and attention, not eye and ear candy of 'modern games' that seem to so often forget anything about the words, enjoyment or fun associated to a game.
One game I'm replaying now is almost 10 years old and it still plays better than many titles I've tried that are recent releases.


( Battle in the Hoth asteroid belt in Shadows of the Empire 1997 )